Synthesis and structural characterization of Cd(II) complexes based on acetylene dicarboxylate: A 1-D polymer as a precursor to CdO nanoparticles

Abstract

Two new compounds, [Cd(adc)(L)(H2O)3]2 (1), [Cd(adc)(bipy)2.H2O]n (2) (Where L = N, N′-bis-pyridin-4-ylmethylenehydrazine, adc = acetylene dicarboxylate and bipy = 2,2’-bipyridine) have been isolated in good yields and structurally characterized by IR, single-crystal X-ray diffraction, and thermogravimetric analysis. Direct thermolysis of complex 2 at 500 °C for 1 h under an ambient atmosphere yielded CdO nanoparticles. The nanoparticles were characterized for their size and structure by powder X-ray diffraction, scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (TEM). TEM images show the formation of nanorods as well as nanospheres. The optical band gap determined by the optical absorption method was found to be 3.8 eV. © 2022 Elsevier B.V.